<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    * {
        margin: 0;
        padding: 0;
    }

    li {
        list-style: none;
    }
    
    .product {
        margin: 50px auto;
        width: 1226px;
        height: 628px;
        background-color: pink;
    }

    .left {
        float: left;
        width: 234px;
        height: 628px;
        background-color: skyblue;
    }

    .right {
        float: right;
        width: 978px;
        height: 628px;
        background-color: brown;
    }

    .right li {
        float: left;
        margin-right: 14px;
        margin-bottom: 14px;
        width: 234px;
        height: 300px;
        background-color: orange;
    }

    .right li:nth-child(4n) {
        margin-right: 0;
    }
    
</style>
<body>
    <div class="product">
        <div class="left"></div>
        <div class="right">
            <ul>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>                
            </ul>
        </div>
    </div>
</body>
</html>